1 // Copyright (c) 2011-present, Facebook, Inc. All rights reserved. 2 // This source code is licensed under both the GPLv2 (found in the 3 // COPYING file in the root directory) and Apache 2.0 License 4 // (found in the LICENSE.Apache file in the root directory). 5 6 #pragma once 7 8 namespace ROCKSDB_NAMESPACE { 9 // The helper function to assert the move from dynamic_cast<> to 10 // static_cast<> is correct. This function is to deal with legacy code. 11 // It is not recommanded to add new code to issue class casting. The preferred 12 // solution is to implement the functionality without a need of casting. 13 template <class DestClass, class SrcClass> static_cast_with_check(SrcClass * x)14inline DestClass* static_cast_with_check(SrcClass* x) { 15 DestClass* ret = static_cast<DestClass*>(x); 16 #ifdef ROCKSDB_USE_RTTI 17 assert(ret == dynamic_cast<DestClass*>(x)); 18 #endif 19 return ret; 20 } 21 } // namespace ROCKSDB_NAMESPACE 22